![]() ![]() Renogy MPPT Controllers can accept 100 Volts input. The reason why series connections are utilized with MPPT controllers is that MPPT Controllers actually are able to accept a higher voltage input, and still be able to charge your 12V or more batteries. Connecting your panels in series will increase the voltage level and keep the amperage the same. Strictly series connections are mostly utilized in smaller systems with a MPPT Controller. Also, paralleling systems require extra equipment such as branch connectors or combiner box. Systems as high as 1000 Watts might end up outputting over 50 amps which is very difficult to transfer, especially in the systems were your panels are more than 10 feet from your controller, in which case you would have to go to 4 AWG or thicker which can be expensive in long run. The downside to parallel systems is that high amperage is difficult to travel long distances without using very thick wires. This is often used in 12V systems with multiple panels as wiring 12V panels in parallel allows you to keep your charging capabilities 12V. Connecting your panels in parallel will increase the amps and keep the voltage the same. Strictly parallel connections are mostly utilized in smaller, more basic systems, and usually with PWM Controllers, although they are exceptions. The purpose of this section is to explain why certain connections are utilized, how to set up to your desired connection, as well as going over what is the most beneficial connection to utilize based on your situation. This section will go into more depth on series, parallel and series-parallel connections. ![]()
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